retrieve column value from database

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ASP.NET

hi,
this is my sendmail code in this i need to display the task id.

when i am saving the data i am converting the taskid to taskname.

projBM.TaskId = Convert.ToInt32(ddlTaskName.SelectedValue);

please check.
in design page i just bind the taskid column as

<asp:Label ID="lblTaskId" runat="server" Text='<%#Eval("TaskID")%>' CssClass="titles2" Visible="false">

private void SendMail()
    {
        try
        {
            
            SmtpClient smtpClient = new SmtpClient();
            MailMessage message = new MailMessage();
            ArrayList empName = null;
            LoginBL loginBL = new LoginBL();
            StringBuilder sb = new StringBuilder();
            empName = loginBL.GetEmployeeName(ddlEmpName.SelectedValue);
            //message.Body = "Please Check Your Task in HRMS";
            message.From = new MailAddress(Session["EmailId"].ToString());
            sb.Append("Hi " + empName[5].ToString());
            sb.AppendLine();
            sb.AppendLine();
            if (hdnEdit.Value != string.Empty)
            {
                //sb.Append("HRMS : " +ddlTaskName.SelectedItem.Text + " is updated");
                message.Subject = "HRMS : " + ddlTaskName.SelectedItem.Text + " is updated";
            }
            else
            {
                //sb.Append("HRMS : " +ddlTaskName.SelectedItem.Text + " is Assigned to You");
                message.Subject = "HRMS : " + ddlTaskName.SelectedItem.Text + " is Assigned to You";

            }
            sb.Append("Please Check Your Task in HRMS");
            sb.AppendLine();
            sb.Append("\n");
            sb.Append("Task Name : " + ddlTaskName.SelectedItem.Text);
            sb.AppendLine();
            sb.Append("\n");
            //sb.Append("Task ID : " +);
            //sb.AppendLine();
            sb.Append("Thanks,");
            sb.AppendLine();
            sb.Append(Session["EmployeeName"].ToString());
            message.Body = sb.ToString();
            message.To.Add(empName[2].ToString());
            smtpClient.Send(message);
        }

please check according to this and help me

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how to retrieve the column from database[^]